Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of nonsteroidal anti-inflammatory drugs (NSAIDs) and selective COX-2 inhibitors. It serves as a building block in heterocyclic chemistry, enabling the construction of complex pyrazole derivatives with potential biological activity. Its aldehyde functional group allows for easy modification through condensation, reduction, or nucleophilic addition reactions, making it valuable in medicinal chemistry for generating compound libraries for drug screening. Also employed in agrochemical research for designing new pesticides and herbicides due to the bioactive nature of pyrazole scaffolds.